According to multiple reports, work seems to have driven the two apart. Mayer, 35, is gearing up for a new tour and Perry, 28, has been working on her third studio album in Los Angeles, making their relationship untenable.

However, the split may not be final. “She’s leaving the window open,” a source told Us Weekly. “They have both been so focused on work.”

The music power couple had been dating for about seven months since a brief break in August. They’d dated casually for a bit before that.

A friend of Perry’s told People there were signs she was unhappy. “She gets really withdrawn when there’s a change in a relationship.”

There were happier times, however. Mayer visited Perry’s hometown of Santa Barbara, Calif., in November and the two were seen together at many high-profile events, including the Grammys in February.

The former Mrs. Russell Brand tweeted earlier this month, “My boyfriend is taking me to a kitten shelter in his truck. I can’t think of a more perfect Saturday.”

When asked in a February interview with Rolling Stone how his relationship with the pop star has been going, the lothario replied, “It’s been…I mean, I’m quite happy.”